Following instructions from the federal government, the crossing points on the Pak-Afghan border had opened for two days on March 7 and 8.
A Federal Investigation Agency (FIA) official said, "The border has been closed for an indefinite period".
He added, "Only valid passport holders were allowed to cross the border into Pakistan. More than 350 Pakistanis, stranded in Afghanistan, were allowed to enter Pakistan".
Many Pakistanis, including traders, transporters, had been stranded in Afghanistan for the last 19 days. Meanwhile, Afghan refugees on their way home complained of slow clearing process.
Earlier, in the wake of a suicide attack at Lal Shahbaz Qalandar's shrine on February 16, the government had decided to seal the border crossings for an indefinite period.